Typewriting machine



Jan. 27. 1925. 1,524,148

L. C. MYERS ET AL TYPEWRITING MACHINE Filed July 12. 192:5 1o sheets-sheet' 1 Jan. 27. 1925.

1,524,148 L. c. MYERS ET Al.

TYPEWRITING MACHINE Filed July 12. 1923 1o sheets-sheet 2 RETURN Jan, 27. 1925. 1,524,148 L. C. MYERS ET Al.

TYPEWRITING MACHINE Filed July 12, 1923' 10 sheets-Sheet s Jan. 27. 1925.

L. C. MYERS ET AL TYPEWRITING MACHINE Filed July 12, 1923 10 Sheets-Sheet 4 Jan. 2 5'. 1925. 1,524,148

L. C. MYERS ET AL TYPEWRITING MACHINE Filed July 12. 1923 10 Sheets-Sheet 5 Jan, 27, 1925.

l.. C. MYERS ET AL.

TYPEWRITING MACHINE Filed July 12. 1923 10 Sheets-Sheet e Jan, 27. 1925.

L. C. MYERS ET AL TYPBWRITING MACHIEKE Filed July 12, 1925 A10 Sheets-Sheet 7 1.,., 27, 192s. Y1,524,148 L. C. MYERS ET Al. f

TYPEWRITING MACHINE Filed July 12, 1923 10 Sheets-Sheet 8 Jan. -27. 192s.

10 Sheets-Sheet 9 www Y 5N. N.

Filed my 12. 1923 L. C. MYERS ET AL TYPEWRITING MACHINE Jan. 1925.

- 1,524,148 l.. c. MYERS ET AL TYPEWRITING- MACHINE Filed July 12.` 192s 1o sheets-sheet 1o Patented Jan. 27, 1925.

UNITED STATES PATENT OFFICE.

LEWIS C. MYERS, OF FREEPORT, AND GEORGE F. HANDLEY. OF GLENDALE, NEW YORK,

ASSIGNORS TO ROYAL TYPEWRITER COMPANY. INC., OF NEW YORK, N. Y., A COR- PORATION OF NEW YORK.

T'YPEWRITING MACHINE.

Application filed July 12,

To Il 'whom it may concern:

lle it known that we, Lewis C. MYERS, a citizen ot' the United States and resident of Freeport. in tht` county of '.\assau and State of New York. and Gnomi; I". Hammer, a citizen of thel United States, and resident of (Allendale. in the county of Queens and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a'specrlication, l' I The typeivriting machine herein illustrated and described as embodying our rnvention relates particularly 1toa machine for writing on relatively narrow slips of paper, such for' example as itemized telephone bills, yalthough manywfeatures of the invention may be usod'in other types of machines. Such slips frequently havefprinted thereon indications of dollars' :indfcents at the extreme right hand side of the slip,fafter writing which the rcarriage shpul ,'be returned for thc'beginning of aq'nevl'lipe.

We have, therefore, provided ja power driven typewritercarriage returmspecitically one driven by an 'electric' 'rrrotor, Yv vlhi'eh is automatically brou ht into operation to re; turn the carriage a ter the last character in the line has been Iwritten. Therejsfalsoprovided a special key for Vreturnir rg'7tlre carringe4 from anydesiredk'poinlt in r the line. lhe carriage is normally disconnected from the power mechanism' so tlratit maybe freely moved in either direction manually. `When returned by the power mechanism, the line space mechanism is automatically operated.

Tlu` machine containing our invention enrbodies the usual hack space mechanism, and since it is important that the back space key and the carriage return key shall not be depressed at the same time, we have provided an interlocking` mechanism whereby the depression of either key prevents the depression of the other until the depressed key has returned fully to normal position.

Tabulating mechanism of a usual type is provided, and a special arrangement is made to prevent the operation of the tabulatrng mechanism when the carriage is close to the and of a line where the return mechanism is about to be liz-ought into play.

We have provided a carriage return mechanism equipped with clutch mechanisrn having au clement connected to the 1923. serial No. 651,073.

constantly running power mechanism, an element connected to the typewriter carriage, and an intermediate clement normally disconnor-(cd from both of the other elements. 'l'hc intermediate clement is connected tothe driving clement for one revolution of the shaft only. and the connection of the intermediate elcment to the carriage is made at a varying point depending upon the distance the carriage has moved, but always such that the one complete revolution of the shaft will return the carriage to starting position.

It is desir-able in writing telephone bills in which the last item is or may be the amount of the tax on the message, to count the number of times which the keys have been depressed. `\Ve have therefore provided a key for writing .10 and another for writing .05, each one connected to a counter. AL the end of the day the total amount of tax on all of the bills written maybe computed by multiplying the numbers in the counters by five and ten cents respectively and adding the products. l

It is obviously necessary that these keys be depressed to their full extent, so that` they will operate the countersv as well as the type bars connected thereto.' Moreover, if a key is depressed a Second time' before return to normal position, it might enter the amount in the counter twice, while only print-ing it once. We have, therefore, provided full stroke mechanism for these keys which prevents the return of the keys to normal position after the depression is begun until they.

have been fully and completely depressed. Moreover', this medranism is double actingr and prevents a second depression of the key before ithas returned entirely to normal position.

As in all power driven mechanisms,- the carriage is returned with considerable force, and we have, therefore, provided a buffer which absorbs the shock of the return blow and stops the carriage at the same position each time.

Special paper 'feedingr and guiding mechanism has also been provided.

Other' features of the invention will be apparent from the followingr detailed description of the drawings and from tlrc :lppended claims.

ln ille drawings;

Figure l is' a sirlc ilcvaliorr ol. tlurrrzrr'lrilre with the parts in normal position and some elements. omitted.

Figure 2 is a top plan view thereof.

Figure 3 is a rear view showing the escapement mechanism and buffer for the carriage return, together with a part of the 1in(` space mechanism in section.

Figui-e 3a is a section on line a-a of Figure 3.

Figure 4 is a plan view of a portion of the mechanism shown in Figure 3 with the buffer in section.

' Figure 5 is a sectional detail ew of the buffer mechanism.

Figure (3 is a peispective view of a slide, forniingpart of the butler mechanism. removed from the machine.

Figure 7 shows a section through the carriage return mechanism at thc right hand side of the machine.

Figure 8 is a section on the line 8 8 of Figure 'i'.

Figure 9 is a section on the line 9 9 of Figure 7.

Figure 10 is a bottom plan view of the paper table and paper feed rolls removed from the machine.

Figure 11 is a side view. with parts in section showing the paper table and paper feed rolls in operative position.

Figure'12 is a side view with parts in section showingthe relation of the back space and carriagel return key levers.

Figure 1 3 is a similar view showing the back space key depressed.

Figure 14 is asectional view. taken transverseypifthe mgchineon thelpivotal axis of the back space" lever.

Figure 15 lis aide'tail of the mounting of the back spaeelever.

Figure 16 I'shows a detail of the in terlocking'fdevice between the back space and carriage return key levers showing the carriage return leverdepressed Figure 17 4i s a' front view of the platen with associatedparts and a portion of the carriage rett'fi'n"` rnechanism with parts in section.

Figure 18 is a view of the drum for the carriage return tape.

Figure 19 is a detail view of the carriage return operating lever.V

Figure 20 is a detail .of the clutch mechanism for connecting the power mechanism to the carriage return drum.

Figure 21 shows a section on the line 21-21 of Figure 7, showing the clutch mechanism in different positions in dotted lines.

Figure 22 is a view of a portion clutch mechanism.

Figure 23 is a section on the line of Figure 7.

Figure 24 is a section on the line Z4-24 of Figure 7.

of the Figure Q5 is a fragmental view of the mechanism shown in Figure 24-A with the parts in a differentl ositioh.

Figure 2G is a site elevation of the operating means for the counters and the full stroke mechanism.

Figure 27 is a front view with parts in section of the full stroke mechanism at the right hand side of the machine and the connection from the key lever to the counter.

Figure 28 is a detail view showing thc connections from the ltcys to the counters.

Figure 29 is a riew of the counter at the left hand side of the machine with the connection for operating the saine.

Figure 30 is a front vieu' of a portion of the full stroke mechanism.

Figure 31 is a side rien' ofthe full stitolu mechanism with one ot the keys fully depressed.

Figure 32 is a similar view at the beginning of the up stroke of the key.

Figure 33 is a rear view of the full stroke mechanism with the levers in section.

Figure 34 is a horizontal section through the full stroke mechanism.

Fi ure 35 is a section through the guide mem er shown in Figure 30 when attached to the frame.

Figure 36 is a detail view of the carriage stop mechanism showing the special tabulating stop.

Figure 37 is a side view of the stop-and cooperating lever.

Figure 38 is a view showing the type of bill or lmemoiandiun for which this machine is especially adapted.

Ournvenltion is illustrated as embodied in auml'achine which is similar in its `main features-to the well known Royal typewriter. 'A main fra'me key levers B, and connections C between the key levers and the type bars D are illustrated as of the usual Royal construction.

A carriage E, comprising side plates E. is mounted to ,travel on the frame in the usual way and is supported at its front by a track rail e which cooperates with a track rail a, on the main frame through interposed baIl or similar bearings F. A platen Gis carried on a platen axle G' which is supported at its ends in the side plates E of the carriage.

In: the. present embodiment of the invention the carriage is not mounted for case shifting since only capital letters are provided, bnt the invention is not limited thereto, since the usual case shifting mechanism of the Royal machine or other machines can be employed without any change in the features comprising our invention. There iS also illustratecla short carriage and platen, especially adapted to the writing of narrow hills or memoranda, but tht` inven- Sts lili) lli) tion is entirely independent of the length of the carriage. f

The. usual paper scale H and fingers I may he employed and the scale is supported by lingers Hy carried by the frame of the machine. One of the fingers I is usually omitted or movedto inoperative position to permit the use of a special linger hereinafter described. l

Mounted in the escapement frame is an escapement rocker J which carries dogs that cooperate with an escapement wheel K which is operatively eonnerted in any desired manner to a rack I, pivotally mounted in the side plates E' of the carriage and movable by the ordinary release key L or by the tabulating key, whenever it is desired to release the carriage from the control of the escapement mechanism. Springs L (Fig. 11)'are provided to return the rack to normal position.

As clearly shown in Figures 7, and 11, a rod 1 extends between the side plates E of the carriage and has mounted thereon arms Q which carry a short shaft 3 in their ends. Arms 4 are carried on' the 'shaft 3 inside of the arms 2 and'support at'their ends rear and front feedlrolls '5'and 5. The shafts of these"1rolls yare preferably mounted in open bearings in the ends of the arms-4 as shownl in 1i`igure111-Il Each arm 2 is Iprovided with' 'an' outwardly extending ear V6to eachofwhicl is 'hooked one end of ai springf? the otheiend of which is fastenedto'a pin' SSupporte'd in' the side plates E 'of the'V carrria'ge. 'These springs tend tohlold Athe feedrfolls against' the platen G.' j f I A Hat ybar A9, which is preferablyl integral with the armls'2, ove'rlies the' ro`d1a'n`d' supports a paper Itable' 10'. Collarsllin'tegral" with arms 2 are provided withf'fset screws for positioning and securing the"'rms to the pivotal rod. 1. The pa rtablef'lO extends beneath the lplaten Ian i has cut 'outs through whichj'the paper feed rollsy 5 and 5 pass to contact' with the laten. Its upper portion has a relatively iigh `side portion 19. fixed thereto and aright hand 'side portion 12 similar inr shape but adjustably mounted on the main portion by means of bolt and slot connections 13, which'permit the adjustment of this'side tothe' dotted line position in Figure 10. By thel'use of these relatively'high sideV portionsa deep chute is formed, the width ofwhich may be adjusted so that the bills will fitI snugly in the bottom thereof. Successive bills may therefore be introduced and the'writing in the right hand column will always fall in the proper position. The table 10 and sides 19 and 1Q have rolled edges 14 to improve the appearance and facilitate the introduction of the bills into the` machine.

'l`o hohl tht` bills snugly in the bottom of the chute one of the usual paper fingers I is either omitted or turned to inoperative position and a special finger provided. This comprises a member 14' (Figure 1T) which is pivotally connected to one of tht` arms H and is spring pressed against the platen. It extends over the printing point adjacent to the finger I and has a eut out 18 lyingabove the printing point. An upper extension has a rolled end 19, and the lower edges 20 are outturned in order that they may not catch on the bills when introduced into the machine.

lVe have embodied in our machine a power driven carriage return which in the form illustrated is driven hy an electric motor 21 mounted in a bracket 22 attached to the rear of the machine frame A and including a bracket arm 22. The shaft 23 of the motor is provided at its outer end with a worm 24 which meshes with a worm gear 25 carried by a bushing 2G which is splined at 26 to a hollow shaft 27 mounted to rotate about a fixed shaft 2S. The end of the shaft 23 as well as one end of the fixed shaft 28, is mounted in the bracket arm 22', while the other end of the shaft Q3 is fast in a hub Q9 of a bracket 30 attached t0 the side of the machine frame'A by screws 30 or in any suitable manner. Near each end the hollow shaft-27 is provided with a plurality of openings in which are mounted balls 31 and 33. The balls 31 are interposed between the bushingQ and the fixed shaft 28, and'the parts are held in proper relation by a collar 32 fastened to the hollow shaft 27 by screws 32. The balls 33 lie between the shaft 28 and a col- 'lar 34 attached to the hollow shaft. which collar is fastened by screws 34 to a member 35 of a vclutch mechanism.: The openings in the hollow shaft 27 serve as cages for the balls 31 and 33 and the shaft 27 therefore rotates freely on the shaft 2S. y lVhen the machine is in use, the motor is constantly running, and therefore the shaft Q7 and the clutch member 35 are both rot-ating.

As shown in Figures 21. 221 and Q4, the clutch member 35 has an irregular central openingcomprising a plurality of semi-circular parts 36 connected by arcs 37 which are struckfrom the center of the shaft'QS. The function of this member will be hereinafter described.

A sleeve 38is mounted tov revolve freely on the 'fixed shaft Q8, and fastened by a screw 39 to the sleeve 38 is a drum 40. A spring 4'1 is attached at one. end to the sleeve 38 and at its other end at 41 to a shell member 42 which is attached by a screw 42' to the fixed bracket 30. A tant 43 is wound upon the drum 40, and the spring 41. whi'b is a relatively light spring7 tends to keep the tape taut and wind it up whenever the carriage is returned bv hand.

llt)

llll' buckle 45.

It also tends to prevent the tape from flying off thedrum in the quick return and stop of the carriage when the power return is employed.

The tape 43 is pivotally connected at 44 to a sliding rod 45 provided with a turn- This rod slides through an opening in one carriage side plate E' and through a. bracket e' fastened to the other side plate, and terminates at its free end in an eyel 46 which is loosely attached by a screw 47 to an arm 48 on a. collar 4S rigidly fastened to a vertical. shaft 49 surrounded by a sleeve 50. This shaft 49 extends through bent oll ears 50 ot one of the carriage side plates and the slee-ve :B0-is attached to'said shaft. A spring 5l attached at one end to turn with the shaft.- through. themedium of the sleeve is attached at. its other endto one oil the ears 50 and tends toreturn. the shaft to normal position. Ait its upper end the shaft has rigidly fastenedthereto a. collar 52, and since the collars 4S and 52 fit outSidethe-.ears 50', the-shaft is held in o erative position-.5 The collar .G2-is' Arovide with' ani arm 53 which! is-connecte by a link 54 with-a, line space pawl 55..- 'Ihis pawl and: the cooperating mechanism are,v or4 may/be, substantially similar to the Royal line! space mechanism- The pawl normallyrests-on an' adjustable guardi. and -when operatedis drawn-:by zxspring- 55- into engagement. with: theteeth g. of. a -natchet wheel-*carried by the platen axle or platen. Arne-adjustableeccentricst'opg limits-thethrow off-the pawl Ltisobvious thatiwhenthe drum 40 -is-.rotatcdto. wind: up

the tape. 43 thereon, the carriage will be returned to. starting posit-ion. and -simultaneously.- the line space mechanism will be rotated-tosspace the.- workA sheet thedesired' distance.A -Thezplatenlmay be--rotatetL at any' time: byv relatively. large finger wheels 15- atta'ehedto the. ends of-the platen: shaift which:

introducedinto the. ma ine...

Mountedon a headed screw 56 inthc bracket 30 isa. leve-r 57., the outer end of which is normally in engagement with.l cer-- tain trip mechanism; hereinafter. described. The- Operation of this lever results in couneet-ing the power return mechanism-.to thc drum 40 and thereby returns the: carriage. The lever. may be operated automatically at a. predetermined point or it may beoperated manually by a key in the keyboard to return the carriage whenever desi-red.

The lever 57 may be operated. automatically throuvh a. trainA of connections comprising a link 60 connecting the lever 57 withone arm of a bell crank lever 6l pivoted at. 62 to the bracket 30 and haring its other arm pivoted to a slidingbar 63 which slides in a guide Gli mounted on the mitv thee quick-movement of' thc- Work s eetr to` writings osition when it isv frame. The sliding bar has mounted thcreon au adjustable stop 65 such as shown iu Fiffure 3. The body of the stop partially euibraces the bar 63 and is provided with a spring pressed, hand operated plunger 65 which is adapted to engage any one of a plurality of holes 65" in the bar 63. 'lhe stop also has an upturned portion whichis adapted to cooperate with an adjustable stopl 66 mounted in the bracket. e' on the carriage frame as the carriage ismoved from right to left during the printing operation. l\'hen the parts are moved from the full to dotted line position oli Figure 1T, the lever 5T will be rocked as shown.

As illustrated, both th(` stops (S5 and (SG are shown as adjustable, but inpractice, probably only one will ordinarily be mailt` adjustable. The screw stop 6G may he made of any desired length and the stop G5 may be fixed, whereby adjustment ot the movement of the carriage wills be obtained by adjustment of the stop 66,. which serres as a limiting,r stop for the carriage. On theother'hand, if the adjustable stop- 66 is'emF ployed, the stop. 66-\\'il1 be short. and capable of. slight adjustment only. The particular form employed will be determined by the character of work which. it is. desired tol perform.

Thelever. 57 is operatedmanually4 through a.v returnkey lever 66 provided with akey 66. and pivoted at GZ. Tothe rear end. of this lever-is ivoted at 69 an. upstanding finger 68 an a. spring 'l0- at. tached" to the lever 66' and thefinger 68 normally holds the latter in ilrsv forwardposition. A bracket 7l (Figure 19).- isfastened.. to thef frame of the machineby a screw 72 and.extendsdownxvardly and then` rearwardly, terminatinv: inI a.- hooked. end.

73.A ,An eccentricullyf adjustable screw stop 74. is locatedjnst in front; of. thehooked. end- 73 and: the linger 68' is guided for. movement between tlio.end\3.and the stop.. The. linger GS.- is provided with a. shoulder 7.5 onthe side which contacts with the stop.

A. depression. of the ret-urn. keytit will therefore result'. inrocking:r the lever 6Ce about its )irot 6T andx in raising. the tingen GS- upu'ar ly into. contact with. tho lever 5T. As soon as the lever. 57` has.. been rocked Sufliciently to disengagn the trip-niechanisni, the shoulder 751 will: come -intor contact with the stop4 74. andthezlingor 68 wilhthenA be cammed= rearwardly to the position shou'u by dottedlincsin Figure 12, at .which time it will be out of. contact with the lever. 5T. which will be immediately.' returned to noruial position. Thisprevents any double operation ofzthe carriage returnmechanism upon a single depressioni of the key lever, and also avoidsthe necessity of a.- prompt release of the return key, since thel return mechanism will perform ilsusual operation .The trip me and will return to normal position even if the key is held depressed.

The opposite end of the lever 57 is provided with a rearwardly projecting pin 76 which has a generally triangular shape and an upper sharp edge normally in engagement with a trip 77.

It is apparent that the carriage return drum 40 is free to be turned on the shaft 28 and that when the machine is in operation, the, hollow shaft 27 and clutch member are constantly rotating. The Vmovement of the lever 57 out of engagement' with the trip 77 is adapted to bring into engagement clutch mechanism which will clutch the carriage return drum 40 to the rotating clutch member throughout a suliicient'period to retnm the carriage to starting position. This result is attained through the mechanism now to be described.

An intermediate clutchmember 78 is mounted on the shaft 28 between the clutch member "'andv a flange 80 of the sleeve 38. ThisV clutch member is mounted for free rotation and it normally holdsin' engagement the trip 77 withthe lever 57. One side of the clutch member 78 is dividedto form two fingers 7 9.' The other side is a generally cylindricalextension 81, whichjis hollow andin which ismounted a ball" 82 normally- `spring-pressed by a 'spring 83 held in place by fa 'screw cap 84;*'Thevshaft' 28v -has a'v groove 85 surrounding the same, in' which the ball 82 'may travel, anda Acutout portion 86 in which the ball is pressed by the end of whiclr is fastened tofa' pin 90 on the clutch member 78.-v When the parts arek in normal positionA theI Spring is held under tensolrbythe'engagement of the trip member 77^with the -pin 76 onthe lever 57, since the clutch member 78 has turned on the shaft far enough to bring the ball 82 into the depression 86, and the parts are so proportioned that this operation holds under tension the spring 89.

The pin 87 is integral or rigid with a member 91 which is mountedto rotate in the ears 7901iz theclutch member 78. It, therefore, follows that the-trip 77 vand member 91 will-rotate about the axis of the latter a short distance under the influence of the spring 89 when the trip is released. The body "of the member 91 is cylindrical,

. but the end 92 opposite to the trip 77 is cut to thel form clearly shown in Figures 24 and One side 93 is cut on an arc struck from the center of thel shaft 28 as a center, and

Vwhen the trip 7 7 is in normal inoperative 'position the end 92 which extends into the without imparting any movement to the member 92 or through it to the member 78. However, whenever the trip 77 is released, either by the manual or automatic operation of the lever 57, the spring 89 will turn the trip' and the member 91 slie'htly, bringing the end 92 into the position shown in Figure 24, wherein it will engage the walls of the first cut out 36 which meets it, and the rotating clutch member 35 will thereby communicate rotary movement to the member 91 and consequently to the whole clutch member 78.

The trip 77 is also provided with a projection 94 which is adapted to engage a lug 95 on the flange 80 of the sleeve 38 which carries the return drum 40. lfVhen the trip Ais in normal position, it will not engage the "takes place the rotation of the clutch member-78,' produced' asexplained above, will be communicated to the carriage drum and act to wind up the tape 43 and thereby return the carriafe. Th engagement of the vpoint 'of thefprojection 94 with the edge of theflange serves.` to limit the movement of the trip under the influence of the v spring 89.vl i Y ber 77 is fast with a pin' 87- "-withwwh'ich' it may wrm-andati a' point 1^ removedA therefrom' it has a ,pintl 88 vtoA whichl is attachedbne end of a spring 89, the other" p heposition of the lug 9 5 with relation to the"V normal rest position of the clutch member 78'and 77 depends upon the amount of movementof the `carriage from its start ing position."v If'the carrige has moved sub` stantially the'full' length of a line, the pro- Ajection94 will-engage the lug 95 almost immediately, but if the carriage has moved only 'a short distance,'the clutch member will rotate the greater part of one complete rerolution before such engagement takes place. The parts are so proportioned that one complete revolution of the clutch member 78 A-f will serve to return the carriage to normal position regardless of the( distance whichit mayhave moved -fromthe starting position.

It is to be noted that as soon as the clutch member 78 completes onecomplete revolution, or just before that moment, the tail of the trip 77 will come into Contact with the pin 76 on the leve-r 57 which has returned to normal position in the meantime whether-the return key has been released or not, as set fort-h` above. This contact will rotate the trip 77 Slightly on its axis, moving the projection 94 out of position to engage the lug 95 and also moving the end 92 of the pin 91 from the position shown in Figure 2l to that of Figure 25, thus permitting further rotation of the clutch member without any movement of the member 78. The contacting portions of the trip 77 and the pm 76 are so formed, as illustrated, that the contact will be practically a line contact, thus allowing quick disengagement and re-engagement with a minimum of wear and no danger of breakage. t

The flange 34 is attached to the shaft 27 by screws 96, and these screws as well as the screws 32', when removed, leave openings through which lubricant can be introduced within the hollow shaft in proximity to the balls 31 and 33. An annular member 97 assists in retaining the lubricant within the hollow shaft at the end adjacent the balls Since the carriage is returned by power, it moves very quickly and will strike the limiting stop with considerable force. In order to absorb the. shock of the blow, wel hai-'e provided buffer mechanism as` shown in Figures 4, 5, and 6. A slide plate 99 1s mounted on a portion 98 of the escape-ment bracket and is held in position b v a headed screw `100 and alscre'w 101 having a hexagon Shoulder. thereon, which pass through elon- A gated holes 4102 and' 103- respectlvely vand screwrinto the bracket-.98. -The screw 101 -is extended to form arpost `104 to. which is attached one-end :of aspring i105.,- the other en'dof which ,is attached to'the bentend 106 of the slide 99. l.The other end ofthe slide is bent in the other direction to formgafcontact member 107. The-parts -are normally:

in the position shown in Figure 5, ,butfwhen the; carriage is returned a g stop 108;,in .the trarne Et fof the; carriage; Acomes -aga-mst the member -107 and: moves the slide 99 tothe positienshown in'- Eigure 4,`- thus tensioning the spring 105. This cushionsthe return move-ment. A :sto L10' Similar 'to the membe r.108 contacts with the stop 111 carredzby the escapement braeket'to limit the movement of the carriage in letter space direction. The stops .108 and 110 are in the. formvof nuts on screw boltswhich pass through the side .frames E ofthe carriaUe and also through the 'side members 109 which support thev carriagerack, andl they serve zas-'pivots 4for the movement of the rack when rocked to release the carriage from control of thc escapement mechanism.

In order to move the carriage backward step-by-step there is provided abaekspace posite end 118 pivotally mounted in a bracket 119 having a horizontal portion 120 that is fastened to the side of the machine by a screw 121. To the rear end of the back space lever 113. is pivoted a link M which operates back space mechanism N not shown in detail, but which may be of any desired type such as shown in Patent N o. 1,154,277, Utz, September 21, 1915.

Somewhat in the rear of the pivot 114 the bark space lever has a pin 122 with which engages closely a short arm 123 which has its other' end fast to the rock shaft 117. A depression of the back space lever will therefore rock the shaft 117. At the right hand. side of the machine the rock shaft 117 is provided with a depending finger 124. The key lever 66 which operates the carriage return mechanism, is provided with a lug 125 from which extends a pin 126 that is f quadrant shaped. As shown in Figure 12,

in which the parts are in normal position,

freturn key lever can Anot be depressed' since .the pin 126 cannotlmove upwardly as if necessary when this lever is depreed. Y 0n the other hand, if the carriage return lever .66 is depressed, as shown inffFigure 16, "the t:pin 126 isswungmp to afp'osition lin which the vertical face thereof lies justin-the rear of the finger 124, Vand the hack ,space-key cannot be depressed', since this cannot move: rearwardly -as -is .necessary Aati such times. This'. mechanisme-therefore operates Y to preventthe accidentaldepression of either the back space lever or the carriage -return lever unless the other one of. these two leversf is in normal position.v Some mechanism of this character is necessary since a simultaneous depression of the-two levers might result in severe damage `to the machine.

l/Vhen the back A tabulatingr stop bar 127 is mounted in the side frames of the carriage in the usual manner and is provided with--tabulatingr stops 12b. A key 129 which is vpreferably broad enough to be operated bythe patm of the hand, is located: near the front of the keyboard, and connected thereto is a key lever 130 pivoted at 67 which has an upwardly extending arm 13-1 connected by a link 133 t0 an offset 134 on a vertical lever 135 pivoted at 136 and connected by a link 137 to a lever 138 in the rear of the machine. This lever is pivoted a-t 139 and has an upwardly extending arm 140 which bears against and opera-tes a stop lever 141 pivoted at 142 and having an offset upper end 143 as shown in Figure 36. The stop 144 which is placed at the right hand side of the carriage has an extension against which the offset end 1-13 comes, thus preventing the key from being operated in this position sufficiently to release the carriage. There is shown at 146 a fragment of a releasing lever which is operated t shown in Patent September 3, 1918. Cooperating stops 14.7 and 148 limit the movement of the tabulating key lever. The tabulatiug.mechanism may be of any desired type, so long as provision is made lor preventing the operation thereof after the carriage has entered the Zone in which the automatic return mechanism becomes effective.

Keys 150, 151 and 152 are provided in the by the tabulating lever 138 as No. 1,277,719, Handley,-

keyboard, the key 150 being carried by av key lever B2 and designed to write 5c, the key 151 being signedto write 10c, while the key 152 is typiral'of the remaining keys andis connected to a key lever .B. It is employed to write a code sign on the hill. 150 and 151 in addition to operating their respective type also operate'counters which register how -many times each key has been depressed. "lhesecounters may bepof any old or desired type..

connected by a s' rew carried by a lever B and dc- The keys O,v and the n, ume rals may be read through an opening-155 in thetop plate. A

finger piecev 156 on the shaft-(157 ofthe ,.,."l`o each .key lever.- pivote'd'a-lever 189 and this shaft has an arn'r 158 connected by counter 1,53 is used for resetting the same,

a link 15910 the key lever-.13.

counterc 1611 is'supported by @bracket 160 left hand side ofthe machine a which has an ear connected by'a screw 160 tothe comb plate: O, and. the numeralsll may be read through, anjopening162 in the top plate. 163 of this counter is used toj reset the same,

and the shaft has,fastened to it an arm 166 to which is attached a. link 167. The brackets 13 and 160 each have depending arms in which is mounted a shaft 168 which extends across the machine. The lilik 167 is connected to an arm 170 carried by a collar. 169 on this shaft. -Near the right hand side of the machine is provided on the shaft 16? a collar 171 having an arm 172 which is connected by a link 173 to thekey lever BL'. It is, therefore, evident that when ever one of the keys 150 or 151 is depressed, the appropriate numeral will be printed and siu'mltaneously the counter will be operated, so that the number of depressions of each key is registered. in our machine for writing theeamount of tax, and it is evident that thetotal amount of tax on all of the bills written during the day (an be quickly ascertained by multiplyingr the number in the counter by 10c, the

A finger piece 164: on the shaft:

These keys are employed .depressed a. second time before theyhave fully returned to normal position. We have,'therefore, provided simple but efficient full' stroke mechanism which will attain this result. A bracket member 174 of the formclearly shown in Figure 30 is attached by screws 175 which pass through holes 17 6 therein to the front comb plate 177. This bracket has two ears 178 near its lower end which are provided with slots 179. Near the top twoears. 180 are provided with teeth 181V whichface thefront and project 5' downwardly. About in its .middle portion, the bracket has ,rearwardlyextending ,ears 182 in which ,is .mounted pivotpin 183 on which. turns a frame comprisingside arms 184l which `.are spaced .by collars 185 'rom ,the ears182.` vit'-splfing 186 f coiled Varo und,the -pin .18 3 Vmay,'bearyat oneend against` a side arm 184 and -at rthe..other Vagainst ,a. framemembenPfwhich is provided witlf the?buitenl Q, for. the return movement "v :rod.1 8 7 andKeacharm hasl teeth-188 ongits front edge whichfexterid upwardly.

on :Mpix/ ot 19Q. ...I`hese1eversl extend up- ,.fardlyand are guided in theslots 1790i the bracket 17 4.; I. At. the uper end-each lever 189 has a tooth 191 that; ;is,bent. .,inward at in a position .to'cooperate .with-the adjacent ratchet teeth 181. Near the upperx end each rearwardly Ain` the plane ofthe. lever and cooperating when the key is depressed with the teeth 188. on the;bar.184.f Each lever [189 also has. a lug A193 somewhat belowits u per end which contacts with the comb guide 177 to. limit the, rearward movement 'of .theleven f Atthelower end ofthe lever lis connectedia y spring191t which extends vforwardly and is attached to vthe keylever When the key B tory-example is depressed, the tooth191.passes down in front of. the teeth 181 and is heldin'contact with them by the spring 194 which rocks the lever 189 on its pivot 190. Thekey lever cannot, therefore, movevupward on account of the engagement ofthe tooth 191 With the teeth 181. As soonas the lever has beenfully depressed the tooth 191 passes beneath the lowermost tooth 181 and springs rearwardly into theposition of Figure lvinwhich. the key leverl is fully depressed." As soon as lill) llO ' show-n Vm vFi the upward movement begins, the tooth 19'?, passes over the teeth 188, and after it has passed one of these teeth as shown in Figure 32, it cannot be depressed until it has'moved all'of the way up to normal position. The forward movement of'the arms 184 is limited by the engagement of 'the heel portion 184 with the comb plate, but during the upward movement of the lever 189, the frame formed of the side arms 184 will be cammed rearwardly against the tension of the spring 186 as shown in Figure 32. iVhen the key lever returns to normal position the tooth 192 engages the upper portion of the side arms 184 and is moved to normal position asin Figure 26. This full stroke mechanism, therefore, prevents the return of a depressed key to normal position before it has been fully depressed and also prevents a second depression of the key before it has returned entirely to normal position.

Pins 196I are attached to the bracket member a'n'd extendoverrthe edge of the carriage return drum to Vkeep' the tape 43 from Hyin'go'ii? ofthe* drum'HThe carriage is advancedin letter-space direction as usual by a spring rumf'19TfcOnnect`ed by a tape 198 to the carriage.

A ty ical memorandum or lbi'1l'199 is re 38. ItV contains' Vcolumns for date; num' of' messages, place, amount, a code letter, Yand theY amount of tax, either the 5e' or lefbeing written by a single depression of a key. Obviouslythe data may be arranged idierentlfsince it is only necessary that' 'the'carriage be moved upon the depression of tihe'last Vlrey 'to a position wherein thereturnmedhanism -becomes auto- .ma'ti'cal'ly'opera'tive.I i

rAco'verlofarny 'suitable shape fits over and encloses' the 'carriage return mechanism as shown.'i -I While the invention has been illustrated in connectioni'with an0n-sliifting platen, it is obvious'lthat it ma be used in connection with a platen that s ifts for case printing, since 'thepivote'd Vconnection of the tape 43 to the sliding rod Will permit of a Shifting-'movementfof the Yplaten without any effet'up'on the remainder of the mechanism. Moreover, it is `evident'that Vthe invention is not limited to'an'electric retiu'n as any other means might be employed for driving the hollow sha-ft 27.

'We have thus provided Vuseful and etlicient mechanism by which the writing of hills may be greatly facilitated. The paper chtite is first set by adjustment of the side member 19. to the Yexact width of the bill to be 'written and the bill when dropped therein can be quickly brought to the prim ing line by means of the large plat-en knohs 15 which enable the platen to he rotated through comparatively large distances very quickly. The line-is written iu the usual manuel', and with the writing of the tax, which is performed by a single key, or with the writing of any other symbol which may be placed in the right hand column, the carriage is returned to position for beginning the next line and the line space mechanism automatically operated. This return movement takes place very quickly and there need be practically no interruption to the work of the operator.

When the tax is written, the depression of the key is registered in the counting device, and when the bill is finished it may be quickly removed and another inserted in the machine. The full stroke mechanism imposes no additional labor upon the key and prevents any erroneous operation of the counter. The interlock mechanism between the carriage return key and the back space key, prevents any operation 0f the two keys at the same time and thus avoids damage to the machine. The special tabulating stop also prevents operation of the tabulating mechanism at a time when the return mechanism is about to operate automatically. Owing to the particular form of clutch mechanism employed, there is normally no connection between the carriage and the return' mechanism, and the carriage can be returned by hand from any position, or may be released and moved manually in either direction as desired.

The return mechanism, and many other of the features of our invention are not in any way limited to typewriting machines, but will be useful in combined typewriting and adding machines, also in adding machines or similar devices. Also various changes may be made in the details of the invention and their specific'embodiments without departing from the spirit thereof.

In general, it is understood that the invention is limited only by the scope of the appended claims.

We claiml as our invention:

1. In a typewriting or similar machine, a carriage return mechanism comprising a constantly rotating shaft, a. spring drum connected to the carriage and an intermediate mechanism normally disconnected from the drum and the shaft, but adapted to he connected to both to return the carriage.

2. In a typewriting or similar machine, a carriage return mechanism comprising a constantly rotating shaft, a spring drum connected to the carriage, and intermediate single revolution mechanism normally disconnected from the drum and the shaft, but adapted to be connected to both to return the carriage from any point by one complete revolution of said mechanism.

3i. In :l typewriting or similar machine, a carriage return mechanism comprising a constantly rotating shaft, a spring drum,

an intermediate mechanism normally disconnected from the drum and shaft, a trip member carried by said mechanism, and means whereby said trip member connects the shaft and drum to return the carriage.

4. In a typewriting or similar machine, a carriage return mechanism comprising a constantly rotating shaft, a spring drum, an intermediate mechanism normally disconnected from the drum and shaft, a trip member carried by said mechanism, means whereby said trip member connects the shaft and drum when released, and means for releasing said trip member.

In a typewriting or similar machine, a carriage return mechanism comprising a instantly rotating shaft, a spring drum, an intermediate mechanism normally disconnected from the drum and shaft, a trip member carried by said mechanism, means whereby said trip member connects the shaft and drum when released, and manual means for releasingr said trip member.

6A In a typewriting or similar machine, a carriage return mechanism comprising a ronstantly rotating shaft, a spring drum, an intermediate mechanism normally diseonnected from the drum and shaft, a trip member carried by said mechanism, means w hereby said trip member connects the shaft and drum when released, and both manual and automatic means for releasing said trip member.

7. In a typewriting or similar machine, a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage and mounted to rotate on said shaft, a power driven hollow shaft rotating on the fixed shaft, an mounted to rotate on said shaft, means for normally holding said mechanism against rotation, and means for releasing the holding means.

In a typewriting or similar machine, a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage a nd mounted to rotate on said shaft, a power driven hollow shaft rotating on the fixed shaft, an intermediate mechanism mounted to rotate on said shaft, means for normally holding said mechanism against rotation, means for releasing the holding means, and means whereby said mechanism when released operates to connect the drum to the power driven hollow shaft.

t). In a typewriting or similar machine, a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage and mounted to rotate ou said shaft, a power driven hollow shaft rotating on the fixed shaft, an intermediate mechanism mounted to rotate on said shaft, means for normally holding said mechanism against rotation, and manual and automatic means for releasing the holding means.

intermediate mechanisml 10. In a typewriting or similar machine` a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage and mounted to rotate on said shaft, a power driven hollow shaft rotating on the fixed shaft, an intermediate mechanism mounted to rotate on said shaft. means for noiinally holding said mechanism against rotation, and means for releasing the holding means which insures automatic re-engagement of the holdingl means and said mechanism upon one complete rotation of the latter.

l1. In a typewritingr or similar machine, a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage and moimted to rotate on said shaft, a constantly rotating hollow shaft mounted on said fixed shaft, an intermediate mechanism also mounted to rotate on the fixed shaft, a trip carried thereby, and means for normally holding the trip in inoperative position.

12. In a typewriting or similar machine. a carriage return mechanism comprising a fixed sha ft, a drum connected to the carriage and mounted to rotate on said shaft, a constantly rotating hollow shaft mounted on said fixed shaft, an intermediatemechanism also mounted to rotate on the fixed shaft, a trip carried thereby, means foi-,normally holding the trip in inoperative position and the mechanism againstrotation, and means for releasing said holding means.

13. In a typewriting or similar mechine, a carriage return mechanism comprising a fixed shaft,a drum connected to the carriage and mounted to rotate on said shaft, a constantly rotating hollow shaft-mounted on said fixed shaft,-an intermediate mechanism also mounted to rotate on the fixed shaft, a. trip carried thereby, means for normally holding the trip in inoperative position and the mechanism against rotating, and automatic means for releasing said holding means when the carriage reaches a. predetermined point in its travel.

14. In a typewriting or similar machine. a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage, a constantly rotating hollow shaft, and an intermediate mechanism, all of said parts mounted to rotate on the fixed shaft, a trip pivotally carried by the intermediate mechanism and adapted when in operative position to form a connection between the drum and the hollow shaft, and means for holding the intermediate mechanism stationarv and the trip in inoperative position.

15. In a typewriting or similar machine` a carriage return mechanism comprising a fixed shaft, a drum connected to the carriage. a constantly rotating hollow shaft, and an intermediate mechanism, all of said parts mounted to rotate on the fixed shaft. a trip pivotally carried by the intermediate mechanism and adapted when in operative position lo form .i connection between the di-ilmand the holloiv shat,`means for hold` "*L the intermediate mechanism stationary .md the trip in inoperative position, .-nd means for releasing the holding means.

16. In a typeivritinsY or similar machine, a carriage return mechanism comprising a tired shift. a drum connected to :he carziagc. a constantly rotating holloiv shaft. .ind an intermediate mechanism. all ot' said parts mounted to rotate on the fixed shaft, a trip pivotall) cairicd by the intermediate mechanism and adapted when in operatiie lN'iSltln t0 fOlm :i nni}Ctiijin liQLWvQii [lu: ili'iiln anti tlm liiillww slififi, means fui' limitiingr the intermediate iiieclizinisiii stiiiOrini'i and the. trip in inoprrativc position. and manual and :iiitoinatic means for releasing thcliolding means.

1T- Ili akfypewritifig 0r' similar machine. -l Cflrrlagel fetllln ll'lCCIlClnlSl'll lllprlSlng Il fixed shaft, a drum conn'ected to thc carriage,a constantly. rotating hollow shaft. .ind an intermediate mechanism, all of said paitsmounted to rotate on the fixed shaft, a tiip pivbtally carried by the intermedi-ate mechanism arid'adapted whenl in operative positibnto form a connection' between the li-uni and the hollow shaft, means for holdingthei'ntermediate mechanism st ationary and 'the trip in inoperative position. and automatic means forlreleasiig thel holdin: means when :tlie carriage' 'reaches a predetermined pointin its travel.

18. In a typewritingor similar machine, a power' driven carriage retu'rn mechanism comprising a constantly running member. a drum connected to the'carriage, means for connectingsaid member to theldrum Yand normally' disconnected from' both, Ikey op- "erated mechanism for contr'olling 'said means, and means Vwhereby the key operated mechanism-'is disconnected from s'aid means icgardless of'continiied pressure up`0n the ltey 19. In a typewriting or similar mnchine, :i power'driven carriage return mechanism comprising' a drum, means for connecting he'drum'as desired to the power. a tape on -.-.ididrum, a sliding iod to which said tape `is connected; :i vertical shaft on the carriage to which said rod is connectedand line space mechanism operated by said vertical shaft. 90. In a typewriting or similar machine, :i power driven carriage return mechanism comprising a drum means for connecting the'driim as desired to the power, a tape on `ad drum, a sliding rod to which said tape connected. n vertical shaft on the carriage to which said rod is connected. line space mechanism operated hv said vertical'shaft. nnd'a springr foi ietuining :aid shaft to nornml position.

'3l l" Il f YpCHzting or siiziilzir iiiarliiue -l l""\""l ill'ivi'n "-iiiiage icturn mechanism,

means for connecting said mechanism to tbe cairiage comprising a tape and a sliding rod` biacliets on said carriage, a vertical :haft mounted in said brackets the lower i-nd of which is connected to the sliding rod` and line space mechanism connected to the iippei, end of Said shaft.

22. In a typewriting or similar machine having a cai .-iage and tabulating mechanism therefor. :i power driven cairiage return mechanism. a lzone over which the carriage tiaiels and .itV the end of lwhich said mechanismV becomes automatically operative-and iiii;i|ifm |iiivcntiiig tin) Opel-dion 0f [lli: (.iliiilal'iir; inici liaiiislzi in Sllld 20m?.

lira typcuiiting oi siinilhr machine, .i poivci diiien carriage i'etiii'n iiiecbaiiism, a tahul'atin; r mechanism` and a special cariiage carried stop provided with means to pievcnt operation of the tabulating mechanism when the carriage retuin mechanism is about to become operative'automatically. Q4. ln'a typewr'itin'g' or similar machine, .i power driven carriage return mechanism, moans foi causing the ieturn'mechanisin to operate automatically at a predetermined point, a tabiilating'meclianism, and' means for preventing the`op`eration of the tabulating' ihechani'smas the' 'carriage approaches said 'predetermined' point.

Q5. In"a 'typewitin'g 0r similar' machine, a poi'verdiiven carriage return mechanism, means 'for causing the return mecli''ni'sm' to operate automatically at a certain point-,a tabiilating mechanism 'comprising a Se'ries of stops'on'the caia'ggand a 'specialstop to p'revht operatio'bf the tabulatin'g'rnechani'sm as the carriage approaches'said cer- YJtaiVpbi'nt.

*26. VIn` a' ty ,eikriting 'or' similar 'machine having'a" 'cari iiive'net'urn'mecha ism and' a key" board provled'witii theusuai'typc'rrey levers', the combination of a r'etu'rn'lteyile'vfer, -a back space key lever, both of said' levers being'mbunted and operative 'independently of the ti* e'key levers,Y and means for' preventing tje' operation of 'either' theretu'rn keylever or 'the'baclt 'space key lever except when' theothcr is in normal position. Y

27. In a typewriting or' 'similar machine having a carriage return mechanism 'and-a kei` hoard provided with the usual tpe kcylei'ers. the ycombination of a return 'ey lever. a back space'key lever, both of saidlei'eis beingr mounted'hrid Oper'ative inde! pcndently of the typ key levers. and'means for preventing the operation of'the return key lever except wh'en 'the hack space key lei-er is in normal position.

2R In a tvpeirriting or similar machine havin- 1Y a carriage return mechanism and a hay hoaid piovided with the usual type key lewis. thc combination of a return key lever. a Imi I: spam; lccji lcicr7 both of said leVtiS bciiig mounted and operative` independently 

